Connectivity: move upower-specific code inside ifdef
Connectivity: move upower-specific code inside ifdef

connectivity_monitor_set_awake() is only called by the code paths that
listen to signals from upower, so passing --disable-upower to configure
triggered a defined-but-not-used warning for it.

freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control